To limit the probability of:
- inadequate ventilation, which could lead to high relative
humidity and the accumulation of moisture,
- insect infestation, or
- the ingress of precipitation.
This is to limit the probability of:
- the generation of pollutants from biological growth
or from materials that become unstable on wetting, or
- deterioration, which could lead to compromised integrity
of environmental separators or of elements protected by the separators.
This is to limit the probability of negative effects on
the air quality of indoor spaces, which could lead to harm to persons.